From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Sat, 18 Aug 2012 16:48:15 +0000 (-0700)
Subject: Fix uninitialized pointer crash for "Save As"
X-Git-Url: http://git.tdb.fi/?p=ext%2Fsubsurface.git;a=commitdiff_plain;h=76fc14f1b4c62506a6a9a8ee27d21ec992a65993

Fix uninitialized pointer crash for "Save As"

The "filename" variable was only initialized when the user accepted the
name, so cancelling the file save would randomly use an uninitialized
pointer.

Reported-by: Miika Turkia <miika.turkia@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/gtk-gui.c b/gtk-gui.c
index 5bc46d2..18c19c7 100644
--- a/gtk-gui.c
+++ b/gtk-gui.c
@@ -173,7 +173,7 @@ static void file_open(GtkWidget *w, gpointer data)
 static void file_save_as(GtkWidget *w, gpointer data)
 {
 	GtkWidget *dialog;
-	char *filename;
+	char *filename = NULL;
 	dialog = gtk_file_chooser_dialog_new("Save File As",
 		GTK_WINDOW(main_window),
 		GTK_FILE_CHOOSER_ACTION_SAVE,